"Fart Cannons are fucking annoying"
"Nice Fart cannon, does it make your peice of shit 1998 honda civic DX do anything special other than making it sound like it is taking a shit everytime you lay on the gas?"
"Fart cannons are the opposite of pussy tubes"

An enlarged exhaust pipe that people sometimes add to their cars. The result is a fart-like sound from the engine. Some fart cans are just for show -- they only make noise, and don't make the car any faster.

This car modification is usually done to Asian import cars, but not always.

a large "N-1 style" muffler usually attached to import cars. manufacturers usually claim it adds power to cars, however it may adversely affect performance of a car due to lack of necesary backpressure in a cars exhaust. The result of these mufflers is a high decible exhaust that makes the car have less power at low rpms. usually purchased by people who think their car is good when it is actually a pos. Fart canons are a major status symbol in the world of ricers, the louder your 93 horsepower import.... the cooler.